Originally Posted by lemmsy

Problem no. 1:
This is a difficult one. I don't know whether training pads would work for the times when she can't go outside due to the weather? I know some people dislike pads as they feel they encourage dogs to pee indoors but I have personally had success with my dog as a pup with them. He was very quick to learn and once he knew to pee on the pad it was just a case of moving the pad to the back door. Then he would pee on the pad at the back door. Finally you'd remove the pad and if you saw him at the back door you'd quickly open the door and praise him lots for peeing/pooping outdoors. We had the occasional accident when we weren't quick enough but other than that it was a very speedy process.
Don't know if that helps though? Just go with whatever works for you.

Problem no. 2:

With the biting, I'd personally put her in timeout (on a lead, 20 seconds alone in a different room to you with her lead trapped in the door between the room which she is in and you so that you can hold the lead). What she is doing is trying to rough play with you. She isn't being nasty but by using timeout you teach that the moment she does that will result in you stopping the game and not paying attention to her.

Problem no.3:
With the biting on the lead. This is an excitment problem and something we experienced when my pup was younger. The trainer at our class advised us to get a thin chain lead and to use that for the next few walks or however long necesary. He very soon stopped the lead biting and we were able to get on with the heel training more effectively. Hope that helps